Maintenance - Thermo Scientific AutoXP Manual

Replacing the Main Board
Thermo Fisher Scientific
Chapter 6

Maintenance

Warning For hazardous area installations: In the event of a fault condition,
the AutoXP flow computer cannot be serviced by the customer. No repair
to faulty assemblies should be attempted. Faulty assemblies must be
replaced with identical replacements. All repairs or part replacements must
be done by Thermo Fisher or its appointed repair agent. Contact Thermo
Fisher for instructions.
Follow the procedure below to replace the main board.
Warning Ensure power is off and the area is non-hazardous before
performing this procedure.
1. Replacing the main board:
a. Remove the HMI board by pulling two snap in connector on top
and other two at the bottom.
b. Pull the bracket that holds Main board gently from the
snap- in connector on top and the other two connectors at
the bottom.
c. Remove the Transducer connector from the main board.
d. Unscrew the I/O board if it is mounted on to XP board by
removing three screws.
e. To remove the XP main board, unscrew one cross screw from the
bracket. If the I/O board was not installed, the main board is
held by four screws.
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AutoXP Users Guide 6-1